package PersonDemo02;

public class Person {

    private int age;

    public Person(){
    }

    public void setAge(int age){
        if (age < 0 || age > 120){
            System.out.println("年龄不合法");
        }else {
            this.age = age;
        }
    }

    public int getAge(){
        return age;
    }
}

